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Finding the Fourth Proportional to 18,701.96, 28,065.10 and 17,200.22

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Solution

The fourth proportional to 18,701.96, 28,065.10 and 17,200.22 is: 25,811.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.96 : 28,065.10 = 17,200.22 : x
  2. Step 2: Convert to fraction form
    18,701.96/28,065.10 = 17,200.22/x
  3. Step 3: Cross multiply
    18,701.96x = 28,065.10 × 17,200.22
  4. Step 4: Simplify right side
    18,701.96x = 482,725,894.32
  5. Step 5: Solve for x
    x = 482,725,894.32/18,701.96
  6. Step 6: Final answer
    x = 25,811.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.